Netgear DS516 DS508 Installation Guide - Page 13

RJ-45 Connector Pin Assignment 1 2 3 6 4, 5, 7, 8 Normal Assignment on Ports 1-8, 1-16, or 1-24 Input Receive Data + Input Receive Data Output Transmit Data + Output Transmit Data Not used Uplink Assignment on Port 8, 16, or 24 Output Transmit Data + Output Transmit Data Input Receive Data + Input Receive Data Not used Troubleshooting Information Symptom Cause Solution Power LED off No power at hub Check the power cord connections. In a stack, no power at hub but Terminator LED is on Check the power cord. In a stack, the termination circuitry gets power from the cascade cable. If one hub in the stack has a faulty power cord or the cord is unplugged, the Terminator LED remains on and the remaining hubs in the stack operate normally. Terminator LED of a Cascade cable not Check for proper connection. middle hub in a stack is on connected properly Link LED off or intermittent Port connection not functioning Check the crimp on the RJ-45 connectors and make sure that the plug is properly inserted and locked into the port at both the hub and device. Make sure cabling is Category 5 and meets the requirements for 100 Mbps operation. Check installation of the network interface cards and verify that they are 100 Mbps capable. Be sure that the proper software driver is loaded. Check link LEDs on the network adapter card and PC or workstation. Make sure cables and connectors are correct. Collision LED on or blinking Collisions taking place on network segment(s) Collisions are normal on Ethernet networks. Excessive collisions can be caused by incorrect cabling, connectors, or wiring techniques or can occur when the network is too busy. Ensure that the far end is set to half-duplex mode and is operating properly. Check for these problems. Problems with port 8 on the Model DS508 hub, port 16 on the Model DS516 hub, or port 24 on the Model DS524 hub Normal/Uplink push button in the wrong position Check the Normal/Uplink push button on the front panel. Model DS508/DS516/DS524 Dual Speed Stackable Hub Installation Guide